The Remaining Oil And Fine Water Flooding Potential Research Of V Block In Xinli Oil Field

The V block of Xinli Oilfield was put into scale production in 1984.With the development of the oilfield,it has entered the "double high" exploitation phase,facing the severe development situation.With the increase of the static and dynamic data,and the deepening understanding of the block,the development issues continue to increase and the existing results need to constantly adjust to and improve.Since the remaining oil distribution is extremely complex and highly fragmented in this period,it urgently needs the the research of the growth of small insulation layer and interlayer in the thick layer and the the research of remaining oil potential,forming the fine water flooding the salt solution at the same time,to guide the oilfield development adjustment.Aiming at the current status,development status and exposed problems in the development in V block,on the basis of a single sand body fine contrast and sedimentary microfacies study,we study the single sand body small interlayer,single sand body internal intercalation,seepage barrier,oil and water distribution and control,thus the current distribution of remaining oil was divided into four types,including microfacies difference residual oil,small compartment cover remaining oil,sandwich type residual oil,rhythm-type residual oil.On the basis of these studies,this paper evaluated the development effect of the oil field water injection conditions,using sand body,and measures the effect analysis,then forming the corresponding fine water flooding the salt solution.Using the research results of remaining oil potential,combining the reality of oilfield development well pattern,analysis the influence degree of the shielding effect of fluid from the small insulation layer,interlayer and rhythm,and guide the perforation layer;Formulating the reasonable thin layered water injection well times principle of selecting well and principles of interval subdivision,and analyzes the eight injection-production well group of the main area,formulating the corresponding fine separate-layer water injection scheme.This paper puts forward the control action of various factors on the residual oil is not single,but a combination of several factors.Interlayer insulation and sedimentary microfacies main control the distribution of remaining oil in the plane.The well group of mezzanine development and distribution of injection-production well within the different rhythm has low daily oil production,sand body use condition is bad,this kind of area are favorable for the oilfield exploration area.